Question 1

What is the major organic product obtained from the following reaction?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 2

The more the substitution of the _____ of an enolate anion, the greater its stability.

Accepted Answer

The answer of The more the substitution of the _____...

Question 3

What is the major organic product obtained from the following reaction?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 4

The class of compound formed in the reaction of the following two substance is a(n)__________.

Accepted Answer

The answer of The class of compound formed in the...

Question 5

How many different β-hydroxyaldehydes and β-hydroxyketones, including constitutional isomers and stereoisomers, are formed upon treatment of a mixture of acetone and acetophenone with base?

Accepted Answer

A)  4 
B)  6 
C)  9 
D)  12 
A)  4 
B)  6 
C)  9 
D)  12

Question 6

What is the major organic product obtained from the following sequence of reactions?

Accepted Answer

The answer of What is the major organic product obtained...

Question 7

What is the major organic product obtained from the following sequence of reactions?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 8

What is the major organic product obtained from the following reaction?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 9

What is the major organic product obtained from the following reaction?

Accepted Answer

The answer of What is the major organic product obtained...

Question 10

What is the major organic product obtained from the following sequence of reactions?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 11

What is the major organic product obtained from the following sequence of reactions?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 12

What is the major organic product obtained from the following sequence of reactions?

Accepted Answer

The answer of What is the major organic product obtained...

Question 13

What is the major organic product obtained from the following reaction?

Accepted Answer

The answer of What is the major organic product obtained...

Question 14

How many different β-hydroxyaldehydes and β-hydroxyketones, including constitutional isomers and stereoisomers, are formed upon treatment of a mixture of butanal and acetone with base?

Accepted Answer

A)  4 
B)  6 
C)  9 
D)  12 
A)  4 
B)  6 
C)  9 
D)  12

Question 15

Tautomerization is catalyzed by both acids and bases.

Accepted Answer

A) True 
 B)False

Question 16

Claisen and aldol condensations can result in cyclization but the Robinson annulation cannot.

Accepted Answer

A) True 
 B)False

Question 17

In an aldol reaction the following substance could be produced by the reaction of acetone (propanone) and _______________. Enter the name of the substance.

Accepted Answer

methanal
f

Question 18

In a Claisen condensation catalyzed by the enzyme thiolase, acetyl-CoA is converted to its _____ ion, which then adds to the carbonyl group of the second molecule of acetyl-CoA to give a tetrahedral addition intermediate.

Accepted Answer

The answer of In a Claisen condensation catalyzed by the...

Question 19

In an aldol reaction the following substance could be produced by the reaction of benzaldehyde and _______________. Enter the name of the substance.

Accepted Answer

The answer of In an aldol reaction the following substance...

Question 20

Acetoacetyl-CoA reacts with acetyl-CoA to give product A in the presence of 3-hydroxy-3-methyl-glutaryl-CoA synthetase. Identify the special feature of this reaction.

Accepted Answer

A)  It is enantioselective, and only the S enantiomer is formed. 
B)  It is enantioselective, and only the R enantiomer is formed. 
C)  It produces a non-superposable R enantiomer. 
D)  It produces a racemic mixture used for various purposes. 
A)  It is enantioselective, and only the S enantiomer is formed. 
B)  It is enantioselective, and only the R enantiomer is formed. 
C)  It produces a non-superposable R enantiomer. 
D)  It produces a racemic mixture used for various purposes.

Exam 19: Enolate Anions and Enamines

What is the major organic product obtained from the following reaction?

The more the substitution of the _____ of an enolate anion, the greater its stability.

What is the major organic product obtained from the following reaction?

The class of compound formed in the reaction of the following two substance is a(n)__________.

How many different β-hydroxyaldehydes and β-hydroxyketones, including constitutional isomers and stereoisomers, are formed upon treatment of a mixture of acetone and acetophenone with base?

What is the major organic product obtained from the following sequence of reactions?

What is the major organic product obtained from the following sequence of reactions?

What is the major organic product obtained from the following reaction?

What is the major organic product obtained from the following reaction?

What is the major organic product obtained from the following sequence of reactions?

What is the major organic product obtained from the following sequence of reactions?

What is the major organic product obtained from the following sequence of reactions?

What is the major organic product obtained from the following reaction?

How many different β-hydroxyaldehydes and β-hydroxyketones, including constitutional isomers and stereoisomers, are formed upon treatment of a mixture of butanal and acetone with base?

Tautomerization is catalyzed by both acids and bases.

Claisen and aldol condensations can result in cyclization but the Robinson annulation cannot.

In an aldol reaction the following substance could be produced by the reaction of acetone (propanone) and _______________. Enter the name of the substance.

In a Claisen condensation catalyzed by the enzyme thiolase, acetyl-CoA is converted to its _____ ion, which then adds to the carbonyl group of the second molecule of acetyl-CoA to give a tetrahedral addition intermediate.

In an aldol reaction the following substance could be produced by the reaction of benzaldehyde and _______________. Enter the name of the substance.

Acetoacetyl-CoA reacts with acetyl-CoA to give product A in the presence of 3-hydroxy-3-methyl-glutaryl-CoA synthetase. Identify the special feature of this reaction.

Covalent Bonding and Shapes of Molecules

Alkanes and Cycloalkanes

Stereoisomerism and Chirality

Acids and Bases

Alkenes: Bonding, Nomenclature, and Properties

Reactions of Alkenes

Alkynes

Haloalkanes, Halogenation, and Radical Reactions

Nucleophilic Substitution and Beta-Elimination

Alcohols

Ethers, Epoxides, and Sulfides

Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Mass Spectrometry

An Introduction to Organometallic Compounds

Aldehydes and Ketones

Carboxylic Acids

Functional Derivatives of Carboxylic Acids

Dienes, Conjugated Systems, and Pericyclic Reactions

Benzene and the Concept of Aromaticity

Reactions of Benzene and Its Derivatives

Amines

Catalytic Carbon-Carbon Bond Formation

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids

Organic Polymer Chemistry

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